Improvement in mowers



W. R. OTIS.

Mower.

No. 216,754 Patent ed June-24,1879"- William 13. 6360's.

"PETERS, PHOTO-LITHUGRAPHER, WASHINGTON, 0 C.

UNITED STATES PATENT OFFIoE.

WILLIAM R. OTIS, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN MOWERS.

Specification forming part of Letters Patent No. 216,754, dated June 24, 1879; application filed April 9, 1879.

' Figure 1 is a top view of a machine with my improvement. Fig. 2 is a vertical section of it, taken through and in line of the axis of the axle. Fig. 3 is a side view of the rocker-lever of the axle and the notched annulus. Fig. 4 1s a front view of the lever and rods by which the aforesaid rocker-lever is connected with the cutter-bar.

My invention relates to mechanism for imparting to the collar-bar its reciprocating recti' linear movements also, to the application of the drag-pole shoe both to the axle and the mechanism for operating the cutter-bar.

In the drawings, A represents the axle B B, the pair of wheels; 0, the comb-bar with its teeth at, and D the cutter-bar, with its series of knives or cutters a, the comb-bar being connected, in the usual manner, with the poleshoe E--viz., by oblique bars 11 c, hinged to them.

The draft-pole is shown at F as fixed-in the shoe or support-piece E, through the rear portion of which the axle extends, such supportplece being thereby movable on the axle longitudinally thereof, and provided with one or more set-screws, d, to fix it in place. The standard s of the drivers seat H is fastened to the pole support-piece.

Each of the wheels has teeth f projecting from its circumference, and one of such wheels 1s provided with an annular flange, I, having a series of triangular or approximately triangular notches, g, extending'around and in it, and arranged as represented, such notches bein g equal in size, and to operate a rocker-lever. L, provided with two friction-rollers, h h, ar} ranged with and applied to it as shown. Th1s lever extends in opposite directions across the axle and spans, and is pivoted to a movable fulcrum-carrier, M, adapted to slide on the axle lengthwise thereof, and connected by means of links i 43 to a forked lever, N.*

The lever N embraces the axle, is pivoted to an ear, K, projecting down from it, and is provided with a pawl, l, to take into a toothed rack, m, applied to or formed in the axle, all

being as represented.

By means of the lever N and the fulcrumcarrier M, the rocker-lever may be moved so as to carry its friction-rollers either into or out-of engagement with the notched annulus. There is pivoted to and projects down from the pole shoe a shortlever, O, which has jointed to it two connection-rods, m '11., one of which is jointed to the rocker-lever, and the other to the cutterbar. When one of the friction-rollers of the rocker-lever may be in and at the middle of a notch of the annulus, the other friction-roller should be at the vertex of the angle of junction of two next adjacent notches in the opposite part of the circumference of the annulus. When the notched annulus is in revolution and in engagement with the friction-rollers of the rocker-lever, it will impart to the lever reciprocati n g movements,whereby the cutter-bar will be reciprocated on the comb-bar.

The pawl and rack above described serve to keep the rocker-lever in engagement with the notched annulus. On raising the pawl out of the rack, thelever N may be worked so as to cause the rocker-lever to be moved out of engagement with the annulus.

By having the shoe E adjustable on the axle as described, when connected with the adjustable lever L and cutter-bar by means of the lever O and the connecting-rods on and u, an advantage is gained.

It will be seen that any movement of the lever L on and lengthwise of the axle, in order to vary the extent of vibratory movements of V such lever by the notched wheel, will cause a much greater movement of the cutter-bar-one which will change the positions of the cutters relatively to the fingers, so as to cause the cutters to cut unequally on opposite sides of the fingers; but by having the shoe adjustable on the axle such shoe can be moved and set so as to cause the cutters to operate equally on oppo site sides of the fingers. Thus each adjust ment of the lever L, to vary the extent of vi bration of the cutter-bar, requires an adjustment of the shoe on the axle, in order for each of the cutters to vibrate like distances across iliary-lever O, pivoted to the shoe, and by the the middle of its finger. 7 two connecting-rods m it, applied to the said What I claim as my invention in the lnowlever, and to the lever L and the cutter-bar, ing-Inachine is as follows, viz: as set forth.

The poleshoe E and lever L, applied to the WILLIAM R. OTIS. axle so as to be adjustable thereon, and with Witnesses: the notched wheel, in manner as described, R. H. EDDY, and connected with the cutter-bar D by the aux W. W. LUNT. 

